mirror of
https://github.com/inspec/inspec
synced 2024-11-26 14:40:26 +00:00
2857d07151
The opening and closing mechanic varied between all the various resources. This changes them all to use a HEREDOC with a tilde to remove leading whitespace. This removes the need for the special method to trim the `#print_example` method from shell. Signed-off-by: Franklin Webber <franklin.webber@gmail.com>
297 lines
9.1 KiB
Ruby
297 lines
9.1 KiB
Ruby
# encoding: utf-8
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# copyright: 2015, Vulcano Security GmbH
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require 'json'
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# Three constructor methods are available:
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# 1. resistry_key(path'):
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# describe registry_key('Task Scheduler','HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Schedule') do
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# its('Start') { should eq 2 }
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# end
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#
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# 2. resistry_key('name','path'):
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# describe registry_key('Task Scheduler','HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\services\Schedule') do
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# its('Start') { should eq 2 }
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# end
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#
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# 3. options hash
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# describe registry_key({
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# name: 'Task Scheduler',
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# hive: 'HKEY_LOCAL_MACHINE',
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# key: '\SYSTEM\CurrentControlSet\services\Schedule'
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# }) do
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# its('Start') { should eq 2 }
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# end
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#
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# Get all childs of a registry key:
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# describe registry_key('Task Scheduler','HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet').children do
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# it { should_not eq [] }
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# end
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#
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# Example to use regular expressions for keys
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# describe registry_key({
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# hive: HKEY_USERS
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# }).children(/^S-1-5-21-[0-9]+-[0-9]+-[0-9]+-[0-9]{3,}\\Software\\Policies\\Microsoft\\Windows\\Installer/).each { |key|
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# describe registry_key(key) do
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# its('AlwaysInstallElevated') { should eq 'value' }
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# end
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# }
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#
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# Example to use regular expressions in responses
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# describe registry_key({
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# hive: 'HKEY_LOCAL_MACHINE',
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# key: 'SOFTWARE\Microsoft\Windows NT\CurrentVersion'
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# }) do
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# its('ProductName') { should match /^[a-zA-Z0-9\(\)\s]*2012\s[rR]2[a-zA-Z0-9\(\)\s]*$/ }
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# end
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module Inspec::Resources
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class RegistryKey < Inspec.resource(1)
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name 'registry_key'
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supports platform: 'windows'
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desc 'Use the registry_key InSpec audit resource to test key values in the Microsoft Windows registry.'
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example <<~EXAMPLE
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describe registry_key('path\to\key') do
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its('name') { should eq 'value' }
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end
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EXAMPLE
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def initialize(name, reg_key = nil)
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# if we have one parameter, we use it as name
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reg_key ||= name
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@options = {}
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if reg_key && reg_key.is_a?(Hash)
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@options = @options.merge!(reg_key)
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# generate registry_key if we do not have a regular expression
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@options[:path] = generate_registry_key_path_from_options
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@options[:name] ||= @options[:path]
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else
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@options[:name] = name
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@options[:path] = reg_key
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end
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return skip_resource 'The `registry_key` resource is not supported on your OS yet.' if !inspec.os.windows?
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end
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def exists?
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!registry_key(@options[:path]).nil?
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end
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def has_value?(value)
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val = registry_key(@options[:path])
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!val.nil? && registry_property_value(val, '(default)') == value ? true : false
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end
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def has_property?(property_name, property_type = nil)
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val = registry_key(@options[:path])
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!val.nil? && registry_property_exists(val, property_name) && (property_type.nil? || registry_property_type(val, property_name) == map2type(property_type)) ? true : false
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end
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# deactivate rubocop, because we need to stay compatible with Serverspe
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# rubocop:disable Style/OptionalArguments
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def has_property_value?(property_name, property_type = nil, value)
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# rubocop:enable Style/OptionalArguments
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val = registry_key(@options[:path])
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# convert value to binary if required
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value = value.bytes if !property_type.nil? && map2type(property_type) == 3 && !value.is_a?(Array)
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!val.nil? && registry_property_value(val, property_name) == value && (property_type.nil? || registry_property_type(val, property_name) == map2type(property_type)) ? true : false
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end
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# returns an arrray of child nodes
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def children(filter = nil)
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children_keys(@options[:path], filter)
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end
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# returns nil, if not existant or value
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def method_missing(*keys)
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# allow the use of array syntax in an `its` block so that users
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# can use it to query for keys with . characters in them
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if keys.is_a?(Array)
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keys.shift if keys[0] == :[]
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key = keys.first
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else
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key = keys
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end
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# get data
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val = registry_key(@options[:path])
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registry_property_value(val, key)
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end
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def to_s
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"Registry Key #{@options[:name]}"
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end
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private
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def prep_prop(property)
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property.to_s.downcase
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end
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def registry_property_exists(regkey, property)
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return false if regkey.nil? || property.nil?
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# always ensure the key is lower case
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!regkey[prep_prop(property)].nil?
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end
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def registry_property_value(regkey, property)
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return nil if !registry_property_exists(regkey, property)
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# always ensure the key is lower case
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regkey[prep_prop(property)]['value']
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end
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def registry_property_type(regkey, property)
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return nil if !registry_property_exists(regkey, property)
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# always ensure the key is lower case
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regkey[prep_prop(property)]['type']
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end
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def registry_key(path)
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return @registry_cache if defined?(@registry_cache)
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# load registry key and all properties
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script = <<-EOH
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Function InSpec-GetRegistryKey($path) {
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$reg = Get-Item ('Registry::' + $path)
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if ($reg -eq $null) {
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Write-Error "InSpec: Failed to find registry key"
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exit 1001
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}
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$properties = New-Object -Type PSObject
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$reg.Property | ForEach-Object {
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$key = $_
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$keytype = $key
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if ("(default)".Equals($key)) { $keytype = '' }
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$value = New-Object psobject -Property @{
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"value" = $(Get-ItemProperty ('Registry::' + $path)).$key;
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"type" = $reg.GetValueKind($keytype);
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}
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$properties | Add-Member NoteProperty $_ $value
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}
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$properties
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}
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$path = '#{path}'
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InSpec-GetRegistryKey($path) | ConvertTo-Json -Compress
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EOH
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cmd = inspec.powershell(script)
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# cannot rely on exit code for now, successful command returns exit code 1
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# return nil if cmd.exit_status != 0, try to parse json
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begin
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if cmd.exit_status == 1001 && cmd.stderr =~ /InSpec: Failed to find registry key/
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# TODO: provide the stderr output
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@registry_cache = nil
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else
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@registry_cache = JSON.parse(cmd.stdout)
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# convert keys to lower case
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@registry_cache = Hash[@registry_cache.map do |key, value|
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[key.downcase, value]
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end]
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end
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rescue JSON::ParserError => _e
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@registry_cache = nil
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end
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@registry_cache
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end
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def children_keys(path, filter = '')
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return @children_cache if defined?(@children_cache)
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filter = filter.source if filter.is_a? ::Regexp
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script = <<-EOH
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Function InSpec-FindChildsRegistryKeys($path, $filter) {
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# get information about the child registry keys
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$items = Get-ChildItem -Path ('Registry::' + $path) -rec -ea SilentlyContinue
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# filter entries
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$items | Where-Object {
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$name = $_.Name
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$simple = $name -replace "HKEY_LOCAL_MACHINE\\\\",""
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$simple = $name -replace "HKEY_USERS\\\\",""
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$simple -Match $filter
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} | % { $_.Name }
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}
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$path = '#{path}'
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$filter = "#{filter}"
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ConvertTo-Json @(InSpec-FindChildsRegistryKeys $path $filter)
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EOH
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cmd = inspec.powershell(script)
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begin
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@children_cache = JSON.parse(cmd.stdout)
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rescue JSON::ParserError => _e
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@children_cache = []
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end
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@children_cache
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end
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# Registry key value types
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# @see https://msdn.microsoft.com/en-us/library/windows/desktop/ms724884(v=vs.85).aspx
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# REG_NONE 0
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# REG_SZ 1
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# REG_EXPAND_SZ 2
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# REG_BINARY 3
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# REG_DWORD 4
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# REG_DWORD_LITTLE_ENDIAN 4
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# REG_DWORD_BIG_ENDIAN 5
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# REG_LINK 6
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# REG_MULTI_SZ 7
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# REG_RESOURCE_LIST 8
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# REG_FULL_RESOURCE_DESCRIPTOR 9
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# REG_RESOURCE_REQUIREMENTS_LIST 10
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# REG_QWORD 11
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# REG_QWORD_LITTLE_ENDIAN 11
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def map2type(symbol)
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options = {}
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# chef symbols, we prefer those
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options[:binary] = 3
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options[:string] = 1
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options[:multi_string] = 7
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options[:expand_string] = 2
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options[:dword] = 4
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options[:dword_big_endian] = 5
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options[:qword] = 11
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# serverspec symbols
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options[:type_string] = 1
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options[:type_binary] = 3
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options[:type_dword] = 4
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options[:type_qword] = 11
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options[:type_multistring] = 7
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options[:type_expandstring] = 2
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options[symbol]
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end
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def generate_registry_key_path_from_options
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path = @options[:hive]
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path += format_key_from_options
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path
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end
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def format_key_from_options
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key = @options[:key]
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return '' unless key
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key.start_with?('\\') ? key : "\\#{key}"
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end
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end
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# for compatability with serverspec
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# this is deprecated syntax and will be removed in future versions
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class WindowsRegistryKey < RegistryKey
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name 'windows_registry_key'
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def initialize(name)
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deprecated
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super(name)
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end
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def deprecated
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warn '[DEPRECATION] `windows_registry_key(reg_key)` is deprecated. Please use `registry_key(\'path\to\key\')` instead.'
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end
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end
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end
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